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【单选题】
According to airline industry statistics, almost 90% of airline accidents are not survivable or partially survivable. But passengers can increase their chances of survival by learning and following certain tips. Experts say that you should read and listen to safety instructions before takeoff and ask question if you have uncertainties. You should fasten your seat belt low on your hips and as possible. Of course, you should also know how the release mechanism of your belt operates. During takeoffs and landings you are advised to keep your feet flat on the floor. Before takeoff you should locate the nearest exit and an alternative exit and count the rows of seats between you and the exits so that you can find them in the dark if necessary. In the event that you are forewarned of a possible accident, you should put your hands on your ankles and keep your head down until the plane comes to a complete stop. If smoke is present in the cabin, you should keep your head low and cover your face with napkins, towels, or clothing. If possible, wet these for added protection against smoke inhalation. To evacuate as quickly as possible, follow crew commands and do not take personal belongings with you. Do not jump on escape slides before they are fully inflated, and when you jump, do so with your arms and legs extended in front of you. When you get to the ground, you should move away from the plane as quickly as possible, and never smoke near the wreckage. According to the experts, when should travelers read and listen to safety instructions?
A.
Before takeoff.
B.
In an emergency.
C.
Throughout the flight.
D.
During landings.
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【简答题】威胁 n.
【单选题】( ),是对我国社会主义建设尤其是改革开放实践中创造的新鲜经验和理论探索成果的总结。
A.
社会主义市场经济理论的形成
B.
科学发展观
C.
"三个代表"重要思想
D.
社会主义本质的理论
【单选题】( ),是对我国社会主义建设尤其是改革开放实践中创造的新鲜经验和理论探索成果的总结。
A.
社会主义本质的理论
B.
社会主义市场经济理论的形成
C.
科学发展观
D.
“三个代表”
【多选题】各国金融机构一般包括以下哪三个部分?( )
A.
商业银行
B.
金融监管机构
C.
中央银行
D.
非银行金融机构
【多选题】 酶的催化特点包括
A.
反应条件温和
B.
专一
C.
多样
D.
催化活性受多因素影响
【多选题】酶的催化特点包括( )
A.
催化效率高
B.
高度专一性
C.
活性的不稳定性
D.
活性的稳定性
【多选题】酶的催化特性包括()。
A.
酶作用的高效性
B.
酶的高度专一性
C.
酶所催化的反应可以改变反应的平衡点
【单选题】( ),是对我国社会主义建设尤其是改革开放实践中创造的新鲜经验和理论探索成果的总结。
A.
社会主义本质的理论
B.
"三个代表"重要思想
C.
社会主义市场经济理论的形成
D.
科学发展观
【简答题】(),是对我国社会主义建设尤其是改革开放实践中创造的新鲜经验和理论探索成果的总结。 A社会主义本质的理论 B社会主义市场经济理论的形成 C科学发展观 D“”
【多选题】酶的催化特点包括()。
A.
催化效率高
B.
专一性
C.
容易失活
D.
传递快
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